Federal Register #EPA-R09-OAR-2026-1257

EPA Denies California's Extension Request for San Joaquin Valley PM2.5 Attainment; Requires SIP Revision

This notice from the Environmental Protection Agency (EPA) addresses regulatory action regarding air quality standards in California's San Joaquin Valley. - Government Buyer: - Environmental Protection Agency (EPA) - Key Details: - EPA is issuing a final rule correcting a previous action that mistakenly granted California an extension for meeting the 2006 24-hour PM2.5 National Ambient Air Quality Standards (NAAQS) in the San Joaquin Valley. - The extension request is now denied; the region is determined to have failed to attain the standards by the original deadline, based on 2017-2019 air quality data. - California must submit a revision to its State Implementation Plan (SIP) to ensure expeditious attainment and achieve a 5% annual reduction in emissions. - Notable Requirements: - The notice outlines regulatory compliance requirements for air quality but does not request products or services. - No OEMs, vendors, or specific products/services are mentioned in this notice. - This is not a procurement opportunity or award announcement.

Description

The Environmental Protection Agency (EPA) is correcting a previous final action that erroneously granted an attainment date extension for the 2006 24-hour PM2.5 National Ambient Air Quality Standards (NAAQS) in the San Joaquin Valley. The EPA is now denying California's extension request and finalizes its determination that the San Joaquin Valley failed to attain the standards by the original December 31, 2019 attainment date, based on air quality data from 2017-2019. Consequently, California must submit a revision to its State Implementation Plan (SIP) to provide for expeditious attainment and a 5% annual reduction in emissions. The rule is effective July 13, 2026.

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